After the Leica D-Lux 7 camera announcement, here is an updated list of the remaining rumored/expected Leica cameras and lenses (see the previous lists here):
Panasonic Lumix S1 and S1R full-frame mirrorless cameras with Leica L-mount
Leica M10-P Safari limited edition camera set
Leica Summilux-M 90mm f/1.5 ASPH lens
New Leica M 35mm Noctilux lens
Silver Leica Summilux-M 28mm f/1.4 ASPH lens
Leica is planning to release/resurrect more vintage lenses in the future (new APO lens and 135mm lenses rumored)
Leica L3 watch with a mechanical alarm complication
Leica Andy Summers limited edition camera (Ralph Gibson edition camera shown above)
Not sure anymore about the previously rumored Leica C-M full frame mirrorless camera after Leica denied the rumors.